I am the perfect example of what happens when you go from abou 5% utilization to about 75% My score has dropped on experian from 660 to 557... over 100 points!!! What I don't understand is why it didn't affect the other bureau's as strongly... any ideas? My revolving credit is around 12k and my debt is around 8k or 9k I will be paying off a couple grand in the next couple weeks to see how this changes things when I drop below 50%... will give an update when they report... I personally didn't think that I would have a 100 point drop in my fico score by playing around...